* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Saturday, September 6, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    ITV Studios Launches New Entertainment Label – Global Bulletin – IMDb

    ITV Studios Unveils Exciting New Entertainment Label

    TS Entertainment bringing Malibu Jack’s to former Owensboro mall – Lane Report

    TS Entertainment Launches Malibu Jack’s at Former Owensboro Mall Location

    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Coherent Joins LLNL’s STARFIRE Diode Technology Working Group to Advance Inertial Fusion Energy – GlobeNewswire

    Coherent Partners with LLNL’s STARFIRE Team to Drive Breakthroughs in Inertial Fusion Energy

    Gene Associated With Deadly Heart Disease in Golden Retrievers Identified – Technology Networks

    Breakthrough Discovery Uncovers Gene Behind Deadly Heart Disease in Golden Retrievers

    Monkey Island LNG Picks ConocoPhillips’ Liquefaction Technology – Hart Energy

    Monkey Island LNG Selects ConocoPhillips’ Advanced Liquefaction Technology for Next-Gen Energy Solutions

    Credo Technology Group Holding Ltd. (CRDO) Surpasses Q1 Earnings and Revenue Estimates – Yahoo Finance

    Credo Technology Group Surpasses Q1 Earnings and Revenue Expectations

    The Economist is hiring a science and technology correspondent – The Economist

    Exciting Opportunity: Become Our Next Science and Technology Correspondent!

    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    ITV Studios Launches New Entertainment Label – Global Bulletin – IMDb

    ITV Studios Unveils Exciting New Entertainment Label

    TS Entertainment bringing Malibu Jack’s to former Owensboro mall – Lane Report

    TS Entertainment Launches Malibu Jack’s at Former Owensboro Mall Location

    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Coherent Joins LLNL’s STARFIRE Diode Technology Working Group to Advance Inertial Fusion Energy – GlobeNewswire

    Coherent Partners with LLNL’s STARFIRE Team to Drive Breakthroughs in Inertial Fusion Energy

    Gene Associated With Deadly Heart Disease in Golden Retrievers Identified – Technology Networks

    Breakthrough Discovery Uncovers Gene Behind Deadly Heart Disease in Golden Retrievers

    Monkey Island LNG Picks ConocoPhillips’ Liquefaction Technology – Hart Energy

    Monkey Island LNG Selects ConocoPhillips’ Advanced Liquefaction Technology for Next-Gen Energy Solutions

    Credo Technology Group Holding Ltd. (CRDO) Surpasses Q1 Earnings and Revenue Estimates – Yahoo Finance

    Credo Technology Group Surpasses Q1 Earnings and Revenue Expectations

    The Economist is hiring a science and technology correspondent – The Economist

    Exciting Opportunity: Become Our Next Science and Technology Correspondent!

    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Male rhesus macaques often have sex with each other, a trait they have inherited in part from their parents

July 16, 2023
in Science
Male rhesus macaques often have sex with each other, a trait they have inherited in part from their parents
Share on FacebookShare on Twitter

Homosexual behavior is not limited to humans. Biologists have reported homosexual behavior in many species of wild animal, ranging from bats and birds to dolphins and primates.

When animals engage in homosexual behavior, one might assume that they invest less time and energy on reproduction. This suggests that there may be strong reproductive costs associated with such behavior, such as having fewer offspring. So it raises the question of how homosexual behavior manages to evolve and continue to exist within a population.

The underlying presumption is that there is not only a cost associated with engaging in homosexual activity, but also that variation in such behavior is passed down from one generation to the next. Called heritability, this is essential for any evolution by natural selection to occur.

We set out to investigate these issues by studying 236 male rhesus macaques living freely in a colony of 1,700 monkeys on the tropical island of Cayo Santiago, Puerto Rico. We observed these monkeys for three years and found that male same-sex sexual behavior (SSB) was widespread. In fact, 72% of the males we observed mounted other males, while only 46% mounted females.

Critically, male SSB is not unique to this population of macaques. We saw similar behavior in wild rhesus macaque populations in northern Thailand. And there have been previous reports of SSB in this species from India, too.

From one generation to the next

We also had access to pedigree records that traced the parentage of each macaque back to 1956. This allowed us to explore the effect of relatedness (heritability) on their behavior, taking into account other factors that could influence the results, such as age and social group structure.

We found that the heritability of male SSB was 6.4%, meaning genetics do account for a small proportion of SSB—the rest is environmental.

We calculated “evolvability” to be 14.9%, giving the potential rate at which the trait can evolve per generation through natural selection. Evolvability is thought to be a more reliable indicator than heritability of the degree to which genetics can respond to evolutionary pressure, and provides us with further evidence that SSB can evolve through selection.

Our estimates align with what we would expect for a behavioral trait that is probably influenced by multiple genetic factors and environmental effects. They are also consistent with heritability values reported in studies of other social behavior in primate species, including social grooming in baboons and social proximity in capuchins.

We also found a genetic correlation between the number of times a male was observed mounting another male and the number of times he was mounted by other males. This suggests that different forms of SSB in these monkeys share a common genetic basis.

What underpins this behavior?

Previous studies on the heritability of SSB have primarily focused on humans. However, these studies often rely on self-reported data, which can introduce complications. The cultural stigma surrounding homosexuality, for instance, could lead to the underreporting of homosexual activity.

Heritability of SSB has also been found in some invertebrate species, including seed beetles and fruit flies. However, the pathways through which SSB develops in these species are thought to be different from those observed in social vertebrates like primates. For example, factors such as imperfect sex recognition are believed to influence the development of SSB in invertebrates.

Demonstrating that SSB is heritable and its potential for evolutionary response to natural selection is an important first step towards understanding the factors that influence variation in this behavior.

Many evolutionary theories for SSB in animals exist. But they all depend on the behavior showing a degree of heritability.

One theory suggests that in some species, animals may engage in SSB because it serves a beneficial social function. For example, it may strengthen the bonds between males, ultimately benefiting them during competition for mates and food.

In support of this theory, our research found that male rhesus macaques involved in SSB partnerships were more likely to support each other in conflicts with other individuals. This effect could be a way in which SSB benefits a macaque and its chances of producing offspring, thereby allowing the behavior and the genes associated with it to persist within a population.

Learning from primates

So what can we learn from these findings about SSB across primate species, including humans?

A previous study examining SSB heritability in humans found significant reproductive costs associated with this behavior. In contrast, we found no such costs in macaques.

This suggests that the costs associated with human SSB might arise from specific social factors unique to humans. However, more research is needed to explore this idea further.

Today, some people still believe that SSB is rare or the product of extreme and unusual environmental conditions, and selectively look to examples in nature to validate their view. Our results may help to challenge these beliefs and combat prejudice against homosexuality and bisexuality. However, society’s moral obligation to strive for more inclusivity and acceptance of different sexual orientations ultimately does not rely on observations from the natural world.

This article is republished from The Conversation under a Creative Commons license. Read the original article.The Conversation

Citation:
Male rhesus macaques often have sex with each other, a trait they have inherited in part from their parents (2023, July 15)
retrieved 16 July 2023
from https://phys.org/news/2023-07-male-rhesus-macaques-sex-trait.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-07-male-rhesus-macaques-sex-trait.html

Tags: macaquesrhesusscience
Previous Post

PLA to resolutely smash any “Taiwan independence” secessionist moves and foreign interference: Defense Spokesperson

Next Post

Donors who feel upbeat are more likely to give to charity—new research

The Two-Body Problem for Women in Science – Nautilus | Science Connected

The Two-Body Problem for Women in Science – Nautilus | Science Connected

September 6, 2025
How AI and Automation are Speeding Up Science and Discovery – Berkeley Lab News Center (.gov)

How AI and Automation Are Accelerating Breakthroughs in Scientific Discovery

September 6, 2025

American Trust Investment Services Serves as Exclusive Placement Agent in $9 Million Follow-On Offering for Nova LifeStyle, Inc. – Morningstar

September 6, 2025
Coherent Joins LLNL’s STARFIRE Diode Technology Working Group to Advance Inertial Fusion Energy – GlobeNewswire

Coherent Partners with LLNL’s STARFIRE Team to Drive Breakthroughs in Inertial Fusion Energy

September 6, 2025
EA SPORTS™ and New York City FC Extend Partnership to Power the Future of Football Fandom in NYC – New York City FC

EA SPORTS™ and New York City FC Join Forces to Transform Football Fandom in NYC

September 6, 2025
News – Ancient DNA Pinpoints Culprit Responsible for World’s First Pandemic – Archaeology Magazine

Ancient DNA Reveals the True Cause of the World’s First Pandemic

September 5, 2025
Fears of US recession as economy adds just 22,000 jobs – The Times

Fears of US recession as economy adds just 22,000 jobs – The Times

September 5, 2025
Musiq Soulchild Surprises Fan’s Bride With “Dontchange” Wedding Serenade – yahoo.com

Musiq Soulchild Captivates Wedding Guests with Heartfelt Serenade of “Don’tchange

September 5, 2025
States fight feds over future of school mental health services – Courthouse News Service

States Clash with Federal Government Over the Future of School Mental Health Services

September 5, 2025
The Florida GOP ending vaccine mandates is playing with fire – CNN

Florida GOP’s Move to End Vaccine Mandates Could Spark Serious Consequences

September 5, 2025

Categories

Archives

September 2025
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930 
« Aug    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (808)
  • Economy (827)
  • Entertainment (21,704)
  • General (16,878)
  • Health (9,868)
  • Lifestyle (840)
  • News (22,149)
  • People (829)
  • Politics (834)
  • Science (16,038)
  • Sports (21,326)
  • Technology (15,808)
  • World (808)

Recent News

The Two-Body Problem for Women in Science – Nautilus | Science Connected

The Two-Body Problem for Women in Science – Nautilus | Science Connected

September 6, 2025
How AI and Automation are Speeding Up Science and Discovery – Berkeley Lab News Center (.gov)

How AI and Automation Are Accelerating Breakthroughs in Scientific Discovery

September 6, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version